MAA dodging input and health regen

so I scream, shout but mostly enjoy.
One thing certainly grinds my gears though mostly when playing MAA.
It kills the flow of the class so often and I would like to know the reason behind it.

Scenario (reproduceable):
I keep pressing shift to keep sprinting. I reach the target area…want to dash closer towards the enemy or do some evasive dodging. Nothing happens. I can hammer the dodgebutton repeatedly without effect.

What solves it is a quick press of the sprintbutton(after I was walking for seconds allrdy).
Suddenly dodging works again.

Keep sprinting…problem with the dodgekey not responding until i quicktap sprint is back.